出版社：Chinese Association for Aerosol Research in Taiwan
摘要：The Diamond Princess cruise ship is a unique COVID-19 transmission case because of the hightesting capacity and the confined environment. This exploratory study aims to raise the hypothesisregarding the role of poor ventilation systems in the spread of COVID-19 by analysing count datacollected by the onboard clinic during the outbreak, and considering the deck plan and design ofthe air conditioning system of the ship. Observed symptomatic infection rate after day 5 (incubationperiod median day) of the quarantine, in cabins without previous confirmed cases are comparedto that in cabins with previous confirmed cases. Accordingly, the observed symptomatic infectionrate in cabins without a previously confirmed case (1.2%) was higher than for cabins with apreviously confirmed case (0.8%); however, the difference was not statistically significant. Inaddition, age did not appear to be a confounding variable. Airborne transmission of COVID-19through the ventilation system onboard could explain the higher than expected virus spread intocabins without previously confirmed cases during the quarantine period; thus, this study providesfurther potential evidence of coronavirus transmission by aerosols. Conflicting results from otherstudies involving the Diamond Princess outbreak are also discussed in light of our results.
关键词：Confined spaces;Ventilation;Airborne transmission;Filters;HVAC system
